Valve Clearance: Specifications

GENERAL SPECIFICATIONS

Valve Train
Exhaust valve lift (in @ zero lash) 7.4 mm
Intake valve lift (in @ zero lash) 7.9 mm
Valve guide diameter 5.509 - 5.539 mm (0.216 - 0.218 inch)
Valve seat width intake/exhaust 0.99 - 1.84 mm (0.038 - 0.072 inch)
Valve seat angle 45 degrees
Valve seat runout 0.075 mm (0.0029 inch)
Valve lash adjustor bore diameter 31.00 - 31.03 mm (1.220 - 1.221 inch)
Cam bore diameter 25.015 - 25.040 mm (0.984 - 0.985 inch)

Valve
Valve head diameter intake 34.85 - 35.15 mm (1.372 - 1.383 inch)
Valve head diameter exhaust 29.85 - 30.15 mm (1.175 - 1.187 inch)
Valve stem diameter intake 5.470 - 5.485 mm (0.2153 - 0.2159 inch)
Valve stem diameter exhaust 5.465 - 5.480 mm (0.2151 - 0.2157 inch)
Valve stem to guide clearance intake 0.0027 mm (0.0009 inch)
Valve stem to guide clearance exhaust 0.0029 mm (0.0011 inch)
Valve face runout 0.05 mm (0.001 inch)
Valve face angle 45 degrees
Valve Spring - Compression Pressure
Intake and exhaust (installed) 38.667 lbs.
Intake (valve open) 8.9 mm (0.35 inch) of lift 97.032 lbs.
Exhaust (valve open) 7.4 mm of lift 93.338 lbs.
Free length 44.92 mm (1.768 inch)
Assembled height 37.9 mm (1.492 inch)